Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f11e8b35da4c1ae…

MALICIOUS

PDF

43.8 KB Created: 2020-08-01 22:59:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f7a2b17ea64a5ea426364b7f234c2b9 SHA-1: a10e870c5904f2b18a5166c5f4714da787ab288d SHA-256: 9f11e8b35da4c1aeb407ae415772a3c970dcb8df740697aec455b0d678f84274
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/wb?keyword=foxit%20reader%20pdf%20printer'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0434/3654/0056/files/gefesetup.pdf'. The document body, though heavily obfuscated, also contains these URLs, suggesting the primary intent is to redirect the user to malicious infrastructure.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/wb?keyword=foxit%20reader%20pdf%20printer
    • http://files.miekemanschot.com/uploads/1/3/1/4/131483305/5351439.pdf
    • http://files.zitascakes.com/uploads/1/3/0/8/130874180/d0ff5f7756.pdf
    • http://files.moonlitdreamspublications.com/uploads/1/3/0/8/130874025/buduweza.pdf
    • http://files.emilymclaughlintravels.com/uploads/1/3/1/8/131856706/d6e33b107a7748.pdf
    • https://cdn.shopify.com/s/files/1/0434/3654/0056/files/gefesetup.pdf
    • https://cdn.shopify.com/s/files/1/0437/4901/5701/files/84825577533.pdf
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/11838597560.pdf
    • https://cdn.shopify.com/s/files/1/0427/8052/4710/files/71469793809.pdf
    • https://cdn.shopify.com/s/files/1/0430/9526/1348/files/48449857878.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jokopewizemaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/cat_face_emoticon.pdf
    • https://cdn.shopify.com/s/files/1/0434/5082/6919/files/52334930852.pdf
    • https://cdn.shopify.com/s/files/1/0437/6189/3534/files/60886859160.pdf
    • https://cdn.shopify.com/s/files/1/0435/1367/5928/files/92148730007.pdf
    • https://cdn.shopify.com/s/files/1/0432/9196/7652/files/96685078023.pdf
    • https://cdn.shopify.com/s/files/1/0431/6089/5650/files/32242231181.pdf
    • https://cdn.shopify.com/s/files/1/0433/0933/4696/files/zomowonibixaridases.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a1e.bin
b975f5c53e486211b47471497982b02fb04f7d343d008e5b2de984c63ba49a36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A1E 4636 bytes
font_01_sfnt_off000069e5.bin
cf50d13c5c21d2e34fba0d9dd21119d4839fc35fdaebfe62cbacf51850cc328d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69E5 1936 bytes
font_02_sfnt_off00007323.bin
30242fefc7f2f1ea4fb086f3515da98b5be2071dce00fbbdb7aa80b683ef5ec2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7323 9508 bytes
font_03_sfnt_off000093a6.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93A6 4324 bytes

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